1.Holding a box at chest height
2.Pushing a bike north for 0.5 km
3.Walking up a flight of stairs
4. Gliding to a stop on roller skates
Which two show work?
no,yes, yes, yes
work involves a force and a distance
bike-friction and distance
stairs-weight and up
skates-friction and distance
1 user commented in " Which of these events demonstrates work being done? "
Follow-up comment rss or Leave a Trackbackno,yes, yes, yes
work involves a force and a distance
bike-friction and distance
stairs-weight and up
skates-friction and distance
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